Plastic film materials have the advantages of light weight, transparency, moisture resistance, oxidation resistance, acid resistance, alkali resistance, good air tightness, and easy printing of exquisite graphics and texts. They are widely used in the packaging of convenience foods, daily necessities, and small supermarket commodities. After printing composite or bag-making processing, it is made into a bag shape, and the contents are sealed. The dazzling array of products on the shelves have their own unique outer packaging. Many food companies like to achieve a partial matte effect on the outer packaging, thereby enhancing the product quality. So how is this effect printed, and what points need to be paid attention to?

First, when printing the plate design, the pattern design of the matte copper plate is reversed, because it is printed on the film substrate, so its layout design is reversed, that is, the Tongli printing plate is reversed. Under normal circumstances, the surface printing dumb oil is the practice of on-site printing, so the depth of its copperplate printing plate engraving will have certain requirements.

Secondly, the matte oil itself needs to achieve a matte effect. First of all, the degree of matte has different requirements according to different needs. On the other hand, because it is printed on the film substrate, the reversed dumb oil is directly exposed on the packaging surface. During packaging, transportation and sales, it will directly contact the outside world, so its scratch resistance must exceed General printing inks, control whether they meet the requirements of food or non-food high hygiene risk performance.

Generally, the matt oil will not be used alone on the outer packaging, but will be printed on the inner layer and used on the surface at the same time to highlight the unique effect of the inverted matt oil. Partial matte can greatly improve the product grade, and it is becoming more and more widely used in flexible packaging. Packaging manufacturers must master the gravure printing anti-printing dumb oil technology, control each key point of production, carry out quality control from the source of production, and provide customers with high-quality packaging products.